
<template>
    <div class="list"  ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">
                            <!-- {{ this.$store.state.city}} -->
                            {{ this.currentCity}}

                        </div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item in hot" :key="item.id"  @click="handleCityClick(item.name)">
                        <div class="button">{{ item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item,index) in cities" :key="index" :ref="index">
                <div class="title border-topbottom">
                    {{ index }}           
                </div>
                <div class="item-list" >
                    <div class="item border-bottom" v-for="i in item" :key="i.id" @click="handleCityClick(i.name)">{{ i.name }}</div>
                    
                </div>
            </div>
            
                       
        </div>
        
    </div>
</template>

<script>

    import { mapState, mapMutations } from "vuex"
    import Bscroll from 'better-scroll'
    export default {
        name : "List",
        props:{
            cities:Object,
            hot:Array,
            letter:String
        },
        data(){
            return {
                // letter : ""
            }
        },
        methods:{
            handleCityClick(city){
                // alert(city)
                // this.$store.dispatch("changeCity",city)        
                // this.$store.commit("changeCityValue",city)
                this.changeCityValue(city)
                this.$router.push("/") 
            },
            ...mapMutations(['changeCityValue'])
        },
        mounted () {
            this.scroll = new Bscroll(this.$refs.wrapper)
        },
        watch:{
            letter(){
                console.log(this.letter)
                if (this.letter) {
                    const element = this.$refs[this.letter][0]
                    console.log(element)
                    this.scroll.scrollToElement(element)
                }
            }
        },
        computed:{
            ...mapState({
                currentCity:"city"
            })
        }
    }
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.border-topbottom
	&:before
		border-color: #ccc
	&:after
		border-color: #ccc
.border-bottom
	&:before
		border-color: #ccc

.list
	overflow: hidden
	position: absolute
	top: 1.58rem
	left: 0
	right: 0
	bottom: 0 
	// background:red
	.title
		line-height: .54rem
		background: #eee
		padding-left: .2rem
		color: #666
		font-size: .26rem
	.button-list
		overflow: hidden
		padding: .1rem .6rem .1rem .1rem
		.button-wrapper
			float: left
			width: 33.33%
			.button
				margin: .1rem
				padding: .1rem 0
				text-align: center
				border: .02rem solid #ccc
				border-radius: .06rem
	.item-list
		.item
			line-height: .76rem
			padding-left: .2rem
</style>